[Smac-users] Number of Slots - Carrier sense delay
johnh at isi.edu
Mon Apr 4 13:31:20 PDT 2011
On Mon, 04 Apr 2011 16:34:02 BST, Norberto Barroca wrote:
>Can anyone explain to me how many slot the authors in “Medium Access Control With
>Coordinated Adaptive Sleeping for Wireless Sensor Networks”, used in the Carrier
>sense delay (That is the same of the contention window size). And what is de
>duration of every time-slot, since in Table 1 I only have the number of time slots
>used in the SYNCH and DATA phases.
>Carrier sense delay - is introduced when the sender performs carrier sense. Its
>value is determined by the contention window size.
You would have to look at the implementation to determine those
I recommend you look at the TinyOS version available at
(that implementation is more complete than the ns-2 simulation).
And S-MAC has really been superseded by SCP-MAC. The SCP paper at
has a more careful description of carrier sense, I think.
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